S
M
T
W
T
F
S
26
96°
72°
27
96°
68°
28
100°
69°
29
70°
57°
30
60°
54°
1
63°
52°
2
74°
46°
3
79°
50°
4
90°
61°
5
95°
57°
6
70°
51°
7
77°
48°
8
83°
58°
9
94°
63°
10
92°
61°
11
82°
55°
12
90°
58°
13
96°
64°
14
97°
67°
15
94°
71°
16
97°
72°
17
91°
73°
18
94°
62°
19
82°
64°
20
77°
62°
21
82°
62°
22
83°
64°
23
87°
66°
24
86°
65°
25
90°
66°
26
86°
67°
27
88°
66°
28
89°
64°
29
92°
68°
30
91°
69°
31
89°
69°
1
85°
68°
2
86°
69°
3
91°
69°
4
92°
70°
5
90°
70°
6
86°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Stamford
Stamford's May 2026 forecast shows daily high temperatures ranging from 77° to 97°, with overnight lows between 62° and 73°. The average high for May is 88° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Stamford. See also: June | July | August.